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Novel (ε-caprolactone)-based copolymers of different compositions were synthesized by allowing methyl iodide to react with the polycarbanion that resulted from the action of lithium diisopropylamide on poly(ε-caprolactone) in THF at −70°C under argon atmosphere. The copolymers were characterized by various techniques, namely 1H nuclear magnetic resonance, size exclusion chromatography, differential...
The objective is to develop a controlled release microencapsulation process suitable for protein drugs. Conventional processing involves conditions, such as exposure to heat, chemical cross-linking agents and organic solvents, which may result in loss of activity of these drugs. Complex coacervation of polyions in combination with spray drying was investigated as a method of microencapsulation of...
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